John c



J. C. NELSON July 1 5, 1930.

COMBINATION TIE AND SPREADER FOR CONCRETE MOLDS Original Filed Feb. 26,1925 fimmzar JaH/v C! NELSON 5L4, 13M M ATTQENEYS Reissued July 15, 1930UNITED STATES PATENT OFFICE JOHN C. NELSON, OF LOS ANGELES, CALIFORNIA,ASSIGNOR TO NELSON SPREADER-TIE COMPANY, OF MINNEAPOLIS, MINNESOTA, ACORPORATION,OF MINNESOTA COMBINATION TIE AND SPREADER FOR CONCRETE MOLDSOriginal N0. 1,712,631, dated May 14, 1929, Serial No. 11,776, filedIebruary 26, 1925. Application 3 for reissue filed December 26, 1929.Serial No. 416,727.

and formed ofsheet metal, so that they may be manufactured at a minimumcost.

A further and more specific object is to produce a combination tie andspreader constructed to provide a body portion having spacingmeans'extending therefrom against which walls of a form or mold areadapted to abut, and straps forming continuations of the ends of thebody portion adapted to be associated with supports for the form or moldto cooperate with the spacing means in tying the walls of the form ormold together in spaced relation'to each other.

A further specific object is to provide a v combination tie and spreaderhaving a main body portion of angular cross-section, comprising two websof varying lengths, the ends of one web providing abutments for thewalls of the mold to prevent their collapse and the projecting ends ofthe other web being adapted to be secured to the mold uprights toprevent spreading, v

The particular object of the invention therefore is to provide acombination tie and spreader for concrete molds.

Other objects of the invention will appear from the followingdescription and the accompanying drawings and will be pointed out in theannexed claims.

- In the drawings there has been-disclosed a structure designed to carryout the various objects of the invention but it is to be understood thatthe invention is not confined to the exact features shown as variouschanges may be made within the scope of the claims which follow.

In the drawing:

Figure 1 is a perspective view of a portion of a concrete form or moldshowing the improved tie and spreader mounted thereon;

Figure 2 is a partial plan view of Figure l showing the preferred methodof securing the device to the uprights of; the mold;

Figure 3 is a perspective View of a portion of the concrete wall withthe mold removed therefrom showing the tie and spreader v mountedthereon; and 1 Figure 4 is a perspective view of the combination tie andspreader removed from the wall; i

- In the selected embodiment of the invention here shown, there isillustrated a portion of a; concrete form or 'mold comprising the usualuprights 5 and the side walls 6 which are usually constructed of lumber.

The novel combination tie and spreader featured in this invention maydesirably include a main body portion of angular cross-. sectioncomprising two webs of varying lengths. The relatively shorter web 7 isadapted to depend into the mold and the ends thereof provide abutments 8adapted to engage inner upper faces of the walls of the mold to preventsuch walls from collapsing. The other web 9 of the device is preferablyarranged at right angles to the web 7 and is adapted to be'arranged in asubstantially horizontal position on the upper edges of the walls 6. Asshown in Figures 1 and 2, the

projecting ends 11 of the device are prefer-- ably turned atright angleswith reference to the main body portion of the web so that their flatfaces mayengage the sides of the uprights as shown in Figure 2. Suitableapertures 12 are provided in the projecting 1 ends 11 to receivesuitable fastenin means such as nails 13, shown in Figure 2. e terminalsof the end-portions 11 of the web 9 may be bent-around the edges of theuprights,

as shown in Figure 2, in order to more securelytie the two uprightstogether to prevent spreading thereof, when concrete is poured into themold, Y

By means of this novel device,- it will readily be seen, by reference toFigures 1 and 2,

that when the tie and spreader is positioned in the mold and secured tothe u rights, it will be impossible for the w of the i mold to collapseand likewise it will be edges of the uprights. The abutments 8 of thedepending web 7 also provide a spacing means for the opposed walls ofthe mold thereby to retain them in true parallel relation.

Referring to the drawing, particularly Figures 1 and 4, it will be notedthat the turned or twisted portions 14 of the endportion 11 arepreferably spaced a distance from the abutment ends 8 of the spacing web7, thereby providing the flat portions 15 which are adapted to engagethe edges of the boards of the mold walls. as will be clear- 1yunderstood by reference to Figurel. By

thus forming the end-portions 11 the boards,

from which the walls of the mold are constructed' may be closely fittedtogether so that the wall when completed, will be comparatively smoothand even.

In the use of this novel tie and spreader, the mold will be constructedas shown in Figure 1, the walls 6 and uprights 5' being securely tiedtogether by means of the device as hereinbefore described. After theconcrete has been poured and the wall set sufficiently to permit removalof the mold, the nails 13, securing the spreader ends 11 to theuprights, will be withdrawn after which the uprights and also the walls6 of the mold may be dissembled, thereby leaving the tie and spreaderembedded in the concrete as shown in Figure 3. The projectingend-portions 11 may then be cut oil by suitable means such as a pair ofpliers after which the main body portion of the tie and spreader will besubstantially embedded and concealed in the concrete wall, as shown inthe lower portion of Figure 3.

,These novel ties and spreaders are preferably made in various lengthsdependent upon the size of the mold with which they are to be used,which size is determined by the thickness of the proposed wall, it beingunderstood that the over all length of the depending web 7 willdetermine the inside width of the mold and therefore the thickness ofthe concrete wall when, completed.

The construction of this device is also very simple and inexpensive asit is preferably of unitary structure and constructed of sheet metalthereby providing a device which may be manufactured at a minimum cost.

I claim as my invention. 1. A combination tie and spreader of unitarystructure for concrete molds "having a 'main body portion comprising twowebs, the

ends of one web providing a spacer for the mold and the projectingstrap-like ends of the other web having a partial twist therein so thatthe flat faces of said ends may engage and partially encircle the molduprights and be secured thereto to prevent spreading of of the other webbeing twisted at right angles to the horizontal plane'of said web andhaving their faces adapted to engage the mold uprights and saidprojecting ends also being apertured whereby they may be secured to theuprights to prevent spreading of the mold. r i l 3. A combination tieand spreader for concrete molds comprising two integral webs of sheetmetal, one of the webs being relatively shorter than the other andadapted to have its ends abut the oppositely positioned walls of a moldto form a spacer therefor,

, the end portionspf the relatively longer web being adapted to extendbeyond the exterior of the walls, said webs being disposed sub-'stantia1ly.at a right angle to each other'so that the outwardlyextending portions of the longer web may rest upon the upper edges, ofthe walls and the shorter web may longitudinally extend between and haveits ends abut said" opposed walls, and each end portion of said longerweb having a quarter twist therein whereby it may be engaged with amold-upright and secured thereto.v

4. In combination with a concrete form comprising side walls secured toexterior vertically arranged supports, a member formed of bendable sheetmetal to provide a body portion of V-shaped cross-section including alaterally projecting spacing web against which the side walls abut todefinitely space them apart, bendable straps integral with the bodyportion, and forming continuations of the ends of the portion, saidstraps extending through the side walls contiguous to the verticalsupports and being bent around the supports to snugly embraceflthelatter,

said straps having openings therethrough,

and fastening members extending through the openings and driven into thesupports for positively securing the straps against displacement, tothereby prevent spreading of the walls under the action of plasticconcrete when poured into the form.

5. As an article of manufacture, a combined spacing and tie memberformed from a single sheet of bendable metal to provide a rectangularbody portion bent along a longitudinal medial line into V-shapedcross-sec-' tion, straps forming continuations of the ends of the bodyportion at one side of the medial line so that the body portion providesat the other side ofthe medial line a spacing web against which the sidewalls of a form are adapted to abut, said straps adapted to bent aroundexterior supports of the form and having openings therein through whichfastening members are adapted to be extended ports of a concrete form soas to co-operate with said web in tying the walls together in definitespaced relation.

7. As an article of manufacture, a combined spacing and tie memberconstructed to form to cooperate fixing said walls provide a bodyportion having a laterally projecting spacing web against the ends ofwhich walls of a concrete form are adapted to abut, and bendable strapsforming continuations of the ends of the body portion adapted to be bentaround exterior supports of the form so as to cooperate with said webin. tying the walls of the form together in definite spaced relation. 9

8. As an article of manufacture, a combined spacing and-tie memberconstructed to provide a body portion, means on said body portionadapted to be inserted between walls of a concrete form in abuttingrelation thereto to space said walls apart, and straps formingcontinuations .of the ends of said body portion twisted'relatiyelythereto and adapted to be fastened to exterior supports of the form tocooperate with said spacing means in tying the walls'of the formtogether in definite s aced relation.

9. A com ination tie and spreader comprising a body portion, means onsaid body portion adapted to be inserted between walls of a concreteform in abutting relation thereto to space said walls apart, and strapsform ing continuations of the ends of said body portion adapted to bebent about and fitted against exterior supports for the walls of thewith said spacing meansin of the form between external supports thereofand said spacing means, whereby to tie the walls of the form together indefinite spaced relation.

10. As an article of manufacture, a combined spacing and tie memberconstructed to provide a body portion having spaced apart surfacesadapted to engage edges of spaced apart walls of a concrete form, meanson said body portion adapted to be inserted between said walls inabutting relation thereto, and straps forming continuations of the endsof said body portion, there being a twist between each strap and saidbody portion to bring portions of the straps into engagement withexterior supports of the form, and said straps being adapted to retainsaid exterior supports in holding relation against the outer portionadapted to faces of the walls of the form to thus cooperate withthespacing means to tie the walls of the form together in definitespaced relation.

11. As an article, of manufacture, a combined spacing and tie memberconstructed to provide 'a body portion having spaced apart, relativelyflat surfaces adapted to lie against edges of spaced apart walls of aconcrete form, means on said body portion adapted to beinserted betweensaid walls in abutting relation thereto, and straps formingcontinuations of the ends of said body portion adapted'to, be bentaround exterior supports of the form to cooperate with said spacingmeans in tying the walls of the form together in definite spacedrelation. I

12. As an article of manufacture, acombined spacing and tie memberconstructed to provide a body portion having spaced apart, relativelyfiat surfaces adapted to lie against edgesofspaced apartwallsofaconcrete form, means on said body portion adapted to be insertedbetween said walls in abutting relation thereto, and straps formingcontinuations of the ends of said body portion, there being a twist atthe location where each strap joins said body portion to bring arelatively fiat surface of each strap into engagement with an exteriorsupport of said form, and said straps being adapted to be fitted toexterior supports of the form to retain said ex terior supports inholding relation against the outer faces of the walls of the form tothus cooperate with the spacing means to tie. the walls of the formtogether in definite spaced relation.

13. As an article of manufacture, a combined spacing and tie memberconstructed to provide a body portion, means on said body be insertedbetween walls of a concrete form in abutting relation thereto to spacesaid walls apart, and. means cooperating with said spacing means to tiethe walls of the form together in definite spacedv said body portiontwisted relatively thereto and adapted to be fastened to an exteriorsupport of the form;

- 14. As an article of manufacture, a combined spacing and tie memberconstructed to provide a body portion, means on said body portionadapt-ed to be inserted between walls of a concrete form in abuttingrelation thereto to space said walls apart, and means cooperating withsaid spacing means to tie the walls of the form together 1n definitespaced relation, said last mentioned means including a strap forming acontinuation of an end of said body portion and twisted relativelythereto, the strap bein formed of a bendable metal adapted to be s apedsubstantially to bine'd spacing and, tie member comprising a strip ofmaterial providing the body portlon of said member, means on said stripadapted to be inserted between walls of a concrete form in abuttingrelation thereto to space said walls apart, and means cooperating withsaid spacing means to tie the Walls of the form together in spacedrelation, said last mentioned means including a strap integral 7 withsaidstrip-andtwisted relatively thereto. 1

' 0 In witness whereof, I have hereunto set my hand, this 16th a ofDecember, 1929.

V JdHN GNELSON

